just went out to start it again and it seems its first start form cold is as it should be sweet as a nut for about 15secs then its all over the place, also seem'd like a noise coming form under the rock cover ???? stuck vavle ???? wiped off the cover and turn'd it over all looked ok, the rocker all went up and down lol what else should i look for, if it is a stuck valve ????????????????

mark